Finding the Fourth Proportional to 31,036.32, 42,830.12 and 16,889.27

Step by Step Solution

1. Step 1: Write the proportion equation
   31,036.32 : 42,830.12 = 16,889.27 : x
2. Step 2: Convert to fraction form
   31,036.32/42,830.12 = 16,889.27/x
3. Step 3: Cross multiply
   31,036.32x = 42,830.12 × 16,889.27
4. Step 4: Simplify right side
   31,036.32x = 723,369,162.22
5. Step 5: Solve for x
   x = 723,369,162.22/31,036.32
6. Step 6: Final answer
   x = 23,307.18